/**
 * Copyright 2005 The Apache Software Foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.edi.db.type;

import java.math.BigDecimal;
import java.math.BigInteger;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Types;

/**
 * BigInteger类型
 * 
 * 
 */
public class BigIntegerType extends NullableType {
	public void set(PreparedStatement st, Object value, int index)
			throws SQLException {

		if (value == null)
			st.setNull(index, Types.BIGINT);
		else {

			if (value instanceof BigDecimal)
				st.setBigDecimal(index, (BigDecimal) value);
			else if (value instanceof Integer)
				st.setInt(index, (Integer) value);
			else
				st.setBigDecimal(index, new BigDecimal((BigInteger) value));
		}
	}

	public Object get(ResultSet rs, String name) throws SQLException {
		BigDecimal bigDecimal = rs.getBigDecimal(name);
		return bigDecimal == null ? null : bigDecimal.setScale(0,
				BigDecimal.ROUND_UNNECESSARY).unscaledValue();
	}

	public int sqlType() {
		return Types.NUMERIC;
	}

	public String toString(Object value) throws Exception {
		return value.toString();
	}

	public Class getReturnedClass() {
		return BigInteger.class;
	}

	public boolean isEqual(Object x, Object y) {
		return x == y
				|| (x != null && y != null && ((BigInteger) x)
						.compareTo((BigInteger) y) == 0);
	}

	public String getName() {
		return "big_integer";
	}

	@Override
	public String getTypeValue(Object value) {
		return String.valueOf(value);
	}

}
